Home / 442,811.20-664,216.80-143,313.70

Finding the Fourth Proportional to 442,811.20, 664,216.80 and 143,313.70

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Solution

The fourth proportional to 442,811.20, 664,216.80 and 143,313.70 is: 214,970.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,811.20 : 664,216.80 = 143,313.70 : x
  2. Step 2: Convert to fraction form
    442,811.20/664,216.80 = 143,313.70/x
  3. Step 3: Cross multiply
    442,811.20x = 664,216.80 × 143,313.70
  4. Step 4: Simplify right side
    442,811.20x = 95,191,367,210.16
  5. Step 5: Solve for x
    x = 95,191,367,210.16/442,811.20
  6. Step 6: Final answer
    x = 214,970.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.